Prosecution Insights

Browse Companies Examiners Firms Draft Your Response

Last updated: August 18, 2026

Examiner: BREWSTER, HAYDEN R

Tech Center 1700 • Art Units: 1672 1700 1773 1779

This examiner grants 62% of resolved cases

Performance Statistics

62.3%

Allow Rate

-2.7% vs TC avg

588

Total Applications

+48.5%

Interview Lift

1224

Avg Prosecution Days

Based on 551 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%

§101 Eligibility

14.1%

§102 Novelty

46.1%

§103 Obviousness

31.8%

§112 Clarity

Currently Pending Office Actions

App #	Title	Status	Assignee
18570003	SEPARATION OF HUMAN MILK OLIGOSACCHARIDES FROM A FERMENTATION BROTH	Non-Final OA	DSM IP ASSETS B.V.
18569986	SEPARATION OF HUMAN MILK OLIGOSACCHARIDES FROM A FERMENTATION BROTH	Non-Final OA	DSM IP ASSETS B.V.
18639787	SLUDGE TREATMENT APPARATUS AND EXCRETA TREATMENT APPARATUS INCLUDING SAME	Non-Final OA	Samsung Electronics Co., Ltd.
18127027	ACTIVE MATERIAL SEPARATION APPARATUS	Final Rejection	HONDA MOTOR CO., LTD.
18249325	SAMPLE COLLECTION APPARATUS AND METHODS FOR IMMUNOASSAY TESTING	Non-Final OA	Siemens Healthcare Diagnostics Inc.
18488296	FILTER FOR FLUID SYSTEM HAVING SEAL WITH INTEGRATED DRAIN BACK VALVING	Non-Final OA	Caterpillar Inc.
18565624	A Booster Unit and a Reverse Osmosis Filtration System	Non-Final OA	3M INNOVATIVE PROPERTIES COMPANY
18248885	WASTEWATER FOAM CONTROL AGENT	Final Rejection	Dow Global Technologies LLC
18005577	PIEZOELECTRIC AND PIEZOCATALYTIC COMPOSITE MATERIAL, AND METHODS OF USING AND FORMING IT	Non-Final OA	UCL BUSINESS LTD

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy